Fuel-gas-controlling valve.



H. H. SOUTHWORTH & G. A. GASE.

FUEL GAS CONTROLUNG VALVE.

APPLICATION FILED JAN. H, 1913.

Patented Nov. 30, 1915.

2 SHEETS-SHEET 1- H. H. SOUTHWORTH & G. A. GASE.

FUEL GAS CONTROLLING VALV E. APPIJICATION FILED JAN. 1:. 1913 PatentedNov; 30, 1915.

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Game v tion thereof, reference scribed and more particularly "in theappended claims.

7 absorption a I l 1. 5 i! 'sr'rns PATENT ornio .11

HARRISON H. SOU'IHWORTH AND GEORGE A. GASE, OF CLEVELAND, OHIO,ASSIGNORS,

BY MESNR ASSIGNMENTS, TO THE ICELESS MACHINE COMPANY, OF CLEVELAND,

OHIO, A CORPORATION OF OHIO. I

FUEL-GAS-CONTROLLING VALVE Specification of Letters Patent. PatentedNOV. 30, 1915.

Application filed January 11,1913. Serial No. 741,414.

To all whom it may concern Be it known that we, I'IARRISON H. SOUTH-WORTH and GEORGE A. GASE, citizens of the United States, and residentsof. Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented certain new and useful Improvements in Fuel Gas ControllingValves; and we do hereby declare that the following is a full, clear,and exact descripbeing had to the ac and to the letters of companyingdrawings,

which form a reference marked thereon, part of this specification. v

This invention relates to a fuel gas controlling valve more especiallyadapted for use in connection with the fuel gas supply of an absorptionrefrigerating apparatus and consists of the matters hereinafterdepointed out The invention is shown as applied to an refrigeratingapparatus of the type'describedin an application heretofore filed byHarrison H. Southworthand Fred W. Wolf, Serial No. 727,353, filed on the23rd'day of October, 1912, but may be applied to other apparatusrequiring the use of a like controlling valve.

In the drawings :Figure l isa view representing a front elevationof arefrigerating apparatus of the type described provided' with ourimproved fuel controlling inclosing theapparatus, as shown in Fig. 1,

with the parts in one position. Fig. 3 is a like view showing the partsin another position. Flg. 4 1s a View representing a vertical sectionthrough by the line 1-4 thereof. Fig. 5 is a view representing avertical central section through the controlling valve mechanism.

The refrigerating apparatus to which'our improved fuel controlling valveis shown as applied, is of the alternating absorption type and includestwo generator-absorbers 10, 11,

which act in alternate'cycles as generators andas absorbers, theoneduring one cycle beingheated while the other-is being cooled and viceversa. Said drums are supported within a casing 12 above a large coolingwa- Fig. 2 in a plane indicated,

- control ter tank 13 which contains a liquid condensing and receivingcoil 14, and into which the cooling water flows after it has beenapplied to that one of the drums which is being cooled. 3

- 15 indicates a burner which is adapted to be shifted from burningposition under one drum to burning position under the other drum, itstwo positions being indicated, respectively, in Figs. 2 and 3. In theapparatus herein shown, the motive power for shifting the burner issupplied by the cooling water falling from the drum which is beingcooled, which cooling water falls into that one of two troughs 16, 17(fixed at the sides of and movable with the burner) which stands underthe drum which is being cooled,

and catching. the water, acts by reason of the weight of the water toshift the burner when the burner is released, as described in theapplication hereinbefore referred to.

Cooling Water is supplied to cool the generator-absorber drums through anozzle 18 which is capable of a shifting movement to direct the coolingwater into one or the other of two compartments 19, 20 in a tank 21,

said compartments being connected, respectively, with pipes 19,20*,located above the respective drums and adapted to discharge coolingwater thereon when the nozzle 18 is in position to discharge water intothe associstruction thus far described will be readily understood and,as it forms no part of the present invention, a further descriptionthereof will be unnecessary.

- 22 indicates a'fuel gas supply pipe and 23 a" casing containing afloat chamber into which said pipe opens. Said casing, as shown, has acylindric side wall 23, a top wall 24, and a bottom wall 25.

A valve-seat 26 is provided at the point of communication between thefuel supply pipe 22 and the casing 23, and 27 indicates a valve adaptedto co-act with said seat to thefiow from said fuel gas supply pipe tothe casing 23. 28 indicates a stem made rigid with said valve anddepending down through the casing and through its bottom wall 25.

ated compartment of the trough. The con- 29 is a float of any suitableconstruction loose bearing engagement with the side wall ,23" of thecasing.

Arranged adjacent to the casing 23 is a short standpipe the lower end ofwhich is connected by means of a suitable casting 31 with the casingwhich casting contains a passage 31 connecting the stand-pipe with theinterior of the casing 23 at its bottom.

32 indicates. a' horizontal pan secured to the upper end ofthestand-pipe 30 and extending transversely of the apparatus so' as toreceive any water that drips 4 from either of the troughs 1t and 17,through notches l6; l7, provided at the front ends of said troughs. Asshown, spouts 16", 17", are provided at said notches to direct the waterinto said pan To the bottom of the casting 31, that eX- tendsbetween thebottom of the casing and the bottom of the pipe 30, is pivoted a leverOne end of said lever is extended into a position in line with the valvestem 28 which projects through an aperture in said lever and which isprovided with a nut3l for engagement with the lower side of said. lever.The other end of saidlever 33 is connected by avertical link 35 to asecond lever 36 located in the neighborhood of the front end of theburner and being fulcrumed at one end 37 to the front wall of the casingsurrounding the refrigeratingapparatus. Its other end 38 is connected bya coiled spring 89 to an arm 40 rigidly secured to said-casing wall. Thesaid spring normally tends to hold the lever36 in its highest positionand it in turn acts, as will be readily apparent, to hold the valve stem28 in its lowest position, in other words, acts to hold the valve 27closed against its seat. The burner is provided with an arcuate arm 4C1having lugs 41*, 41 which project into the plane of the lever 36 and theparts are so arranged that when said burner is in heating position undereither of the generator-absorbcr drums, said lugs will act to depressthe lever 36 so as to allow the valve 27 to risefrom itsseat; while ifthe burner is at any intermediate position, the spring 39 will lift thelever 36 and thus close the valve upon its seat.

The top wall 24 of the casing 23 is provided with a passage 42 which isconnected with a nozzle 43 arranged to direct the flow of gas into theinlet end of the burner 15, in a familiar manner. I

The operation of my improved. fuel controlling valve mechanismis asfollows: When the valve 27 is raised from its seat, the fuel gas passingthrough the supply pipe 22 into the float-chamber 23 passes by Way ofthe passage 42 and the nozzle 43 into the burner. The pressure of thegas in the float chamber will tend to depress the water and thus forcethe water out of the bottom of the casing 23 up into the pipe 30. Thefloat 'thus entirely cutting off of course follows the water level. Thusunder a certain pressure of gas, the float 29 will stand at a certainlevel in the casing 23, the dili'erence in the level of the water in thecasing 23 and, of the level of the water in the pan at the. top of thepipe 30 being in proportion to the head of gas. The parts are soconstructed and arranged that with this normal pressure the burner willget enough gas to maintain the desired flame, there being a certainvalve opening under these conditions. Should the pressure of the gasfrom the supply pipe for any reason increase, as when gas jets in otherparts of the building are turned oil, the increased pressure will act todepress the water level and with it the "float in the casing 23 whichwill cause the water in the float chamber to flow into the pipe 30 andup into the pan 32, which will overflow. The depressing of the float 29will produce a partial closing movement of the valve 27 thus acting tocut down or choke the gas coming through into the float chamber 23 so asto maintain the pressure in the float chamber and also at the burner atsubstantially the initial pressure. A reduction of the gas pressure inthe supply pipe will have the opposite effect, first acting to re: ducethe pressure in the cha-nber 23 and permit the water and the float torise in said chamber. This produces an opening movement of the valve sothat more gas may flow into the float chamber. Thus the action of thedevice is to maintain a constant pressure in the chamber 23 andtherefore a constant pressure of gas at the burner. The adjustment ofthe float on the valve stem provides for the initial adjustment of theparts to produce the required valve opening for the predetermined gaspressure. As before pointed out When the burner moves to an intermediateposition the valve is closed by the levers 36 and 33, thus cutting olfthe supply of gas entirely .and putting out the burner.

A small opening 25 is provided in the bottom wall of the casing 23 sothat in case the water supply should for any reason he cut olf entirely,the water in the pan 32, stand-pipe 30, and at the bottom of thefloatchamber 23, will flow out through this opening, and the float 29will fall of its own weight and close the valve 27 on its seat, thesupply of gas.

A pilot burner is connected to the fuel gas supply pipe above the valve27 and is attached to the burner so as to swing therewith and always bein position to light the burner when the gas is turned on.

We claim as our invention 1. The combination, with a burner and a pipefor supplying fuel gas thereto, of a valve for controlling the supply ofgas throughsaid pipe, means foroperating said valve adapted to be actedupon in one directi n by a column of liquid and acted upor Ill) i ieaten in the other direction by the gaspressure, there being acomparatively small constantly open draining vent from the liquiclcolumn,

liquicl su nply causes for fuel gas, of a ure oat liquid supply causesthe closing of the gas valve,

In testimony, that we claim the fpregoiug 15 as our inventien We aff xour signetures 1n the presence of two witnesses, the elghth day fJanuaryA. D. 1913.

'HARRISONH. SOUTHWORTH.

GEORGE A. GASE.

Witnesses: R. H. JAMISON, R. HALL.

